James robertson



(No Model) ROBERTSON.

-SASH HOLDER.

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'me ATIONAL umoninnm'n COMPANY.

UNITED STATES PATENT OFFICE.

JAMES ROBERTSON, OF PERTH, CANADA, ASSIGNOR OF ONE-HALF TO ANSLOW BARRINGTON RUDD AND HENRY H. NEILSON, OF SAME PLACE.

SASH-HOLDER.

SPECIFICATION forming part of Letters Patent No'. 510,614, dated December 12, 18973. Application filed July 26, 1893. Serial No. 481,516. (No model.)

To all whom it may concern:

Be it known that I, JAMES ROBERTSON, a subject of the Queen of Great Britain and Ireland, residing at`the town of Perth, county of Lanark, Province of Ontario, Canada, have invented certain new and useful Improvements Ain Sash Holders and Fasteners, of which the following is such a full, clear, and exact description as will enable any one skilled in the ro artto which it appertains to make and use the f same,

This invention relates to a device which is adapted to be attached to an ordinary window sash for A the purpose of fastening the sash i5 against downward movement when the same is raised, or for the purpose of holding the sash against upward movement-each of these functions depending upon the relative adjustment of the device, as will be hereinafter dezo scribed.

In the accompanying drawings illustrating my invention, Figure 1, represents the lower part of an ordinary window sash and frame, together with two of my improved devices,

2 5 one of which is applied to the right hand side of the sash so as to be used as a holder for sustaining the sash in raised position, while the other one which is arranged at the left hand side of the sash serves asa fastener for 3o preventing the sash from being raised.v In this view each of the devices is shown in plan-the sash being partly raised and the devices being each adjusted in position of use. Fig. 2, is an enlarged plan view of the device 3 5 when used as a fastener-the position in which it is here shown being that which it may assume when in disuse or idle. Fig. 3,

is a view in section of the device, the plane of which section is indicated by line Fig. 2.

Referring to the drawings, in which like numbers of reference designate like parts throughout, 2 represents a body or plate, which, in plan, is formed with an irregular curved outline, assuming in general form an oval or oblong figure. This body is preferably made flat, and in the construction shown, the edge 3, thereof, lying to the right hand of the line w-x, Fig. 2, and which `I will term the active edge, is formed arc-shaped with a 5o regular curve or approximately so, while the remaining part 4, lying to the left hand of the line -m, and which I will -term the idle or inactive edge, is formed withan elliptical curve or nearly so. The body or plate 2, is provided with a curved slot 5, formed somewhat irregu- 5 5 lar in outline and arranged toward one end of the body with the ends thereof projecting toward the elliptically-shaped or inactive edge of the body. The relative shape of the curved slot 5, and the active edge 3, as well as the location of the slot toward one end of the body (the upper end in Fig. 2) necessarily causes these two parts to be non-concentric. By virtue of this construction the curvedseotion 6, lying between the curved slot 5, and the edge 3, of the body constitutes what may be termed a curved wedge.

A pin or stud 7, is placed in fixed position at a suitable point on the side of the window sash 12, which slides vertically in the window 7o frame 13. This pin is shown as made of an ordinary screw and it projects through the curved slot 5. In the operation of the device, the curved slot moves over the pin. By holding the edge 4, uppermost and in about a horizontal position, placing the device near the window frame 13, and inserting thepin 7, in the then right hand end of the curved slot, and securing it fast, the device will be adjusted for use as a holder for sustaining the 8o sash in elevated position. When the sash is elevated and the device is thus arranged, it will serve to hold the sash by forcing downwardlythe left hand or outer end of the body 2, as shown at the right hand of Fig. 1. This movement causes the curved slot to travel over the fixed pin 7-the latter moving on to what I call the high part 8,v of the slot, while the curved wedge-like portion 6, is wedged in between the pin and the window frame. The

Ycontinued action exerted by the weight of the sash tends to increase this movement of the 'facilitate the manipulation of the device when used either as a sash holder or fastener, I provide the outer end thereof, that is the end remote from where the curved slot is located, with a suitable thumb-piece or handle 9.

IOO

This handle may assume any convenient form desired though I have shown it in the shape of a curved projection or member.

When the device is to be used as a means for fastening the sash against upward movement, it is mounted in a reverse manner from that just described, as will be readily understood from the plan View of the device shown at the left hand side of Fig. 1, and'in Fig. 2. In this use of the device the active edge 3, is located uppermost when in service and the relative movement thereof in binding or wedging the parts is the same as above described with the exception that the direction of movemeut is the reverse-the slot 5, traveling downwardly about the pin and the curvedwedge 6, also moving downwardly, instead of in an upward direction. In the position shown, at the left hand of Fig. 1, the device locks the sash against upward movement and any force applied to the sash in an upward di-` rection will cause the fastener to lock the sash all the more securely. In order to release the fastener, the outer end is moved downwardly by hand until the active edge is free from the frame 13.

In order to facilitate the movement ot' the device, when adjusting it as a fastener or holder and cause it to bite against the win-` dow frame more readily, I provide theedge of `the body 2, with a soft yielding material l0, such as india-rubber, for example. In the construction shown this material, or rubber, 10, is in the form of a band which surrounds the entire plate 2--a groove l1, being preferably formed in the periphery of the plate, for receiving this band or strip. In addition to the assistance rendered by the friction of the rubber against the window frame in the locking movement of the plate, the rubber also serves to protect the window frame against mutilation as it acts like a cushion between the bearing edge of the plate and the frame. If preferred, a washer may be interposed between the device and the window sash to prevent the latter from being marked or scratched by the movement of the plate.

The body or plate 2, may be made of wood or metal and its general form may be varied without departing from the spirit of the invention as herein described. I also contemplate making the plate or body 2, of rubber instead of wood or metal, in which case a brass tting might be used for the screw-hole formed through the rubber.

Having thus described my invention, I claim- A sash holder and fastener consisting in the combination of a fixed pin, a movable plate having a curved slot formed therein and adapted to receiveand travel over said pin, the said plate being provided with a curved edge inclined relatively to said slotso as to provide an intermediate curved Wedgelike piece, substantially as and for the purpose set forth.

In testimony whereof I `have `hereunto set my hand, this 17th day of July, 1893, in the presence of the two subscribing witnesses.

JAMES ROBERTSON.

Witnesses:

EDWD. G. WILK, G. S. WRATHALL. 

